Scoupe L4-1468cc 1.5L SOHC (8 VALVE) (1991)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
To test the Idle Speed Control (ISC) Servo, located on the throttle body, proceed as follows.
ISC Motor Connector Location
1.
Disconnect the ISC motor connector.
ISC Servo Continuity Test Hook-up
2.
Check the continuity of the ISC motor coil between terminals 1 and 2.
Standard Value...5-36 ohm (@20°C/68°F)
ISC Connector Hook-up
3.
Connect 6V DC (four dry cells) between terminal 1 and terminal 2 of the ISC motor connector, and check to be sure that the ISC servo operates.
Terminal 1+: ISC motor (extension)
Terminal 2+: ISC motor (retraction)
CAUTION: Apply only a 6V DC or lower voltage. Application of higher voltage could cause locking of the servo gears.
4.
If the servo does not operate, replace it as an assembly.